1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
/**CFile****************************************************************
FileName [ioReadBench.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Command processing package.]
Synopsis [Procedures to read BENCH files.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: ioReadBench.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "io.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static Abc_Ntk_t * Io_ReadBenchNetwork( Extra_FileReader_t * p );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Reads the network from a BENCH file.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Io_ReadBench( char * pFileName, int fCheck )
{
Extra_FileReader_t * p;
Abc_Ntk_t * pNtk;
// start the file
p = Extra_FileReaderAlloc( pFileName, "#", "\n\r", " \t,()=" );
if ( p == NULL )
return NULL;
// read the network
pNtk = Io_ReadBenchNetwork( p );
Extra_FileReaderFree( p );
if ( pNtk == NULL )
return NULL;
// make sure that everything is okay with the network structure
if ( fCheck && !Abc_NtkCheckRead( pNtk ) )
{
printf( "Io_ReadBench: The network check has failed.\n" );
Abc_NtkDelete( pNtk );
return NULL;
}
return pNtk;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Io_ReadBenchNetwork( Extra_FileReader_t * p )
{
ProgressBar * pProgress;
Vec_Ptr_t * vTokens;
Abc_Ntk_t * pNtk;
Abc_Obj_t * pNode;
Vec_Str_t * vString;
unsigned uTruth[8];
char * pType, ** ppNames, * pString;
int iLine, nNames, nDigits, fLutsPresent = 0;
// allocate the empty network
pNtk = Abc_NtkStartRead( Extra_FileReaderGetFileName(p) );
// go through the lines of the file
vString = Vec_StrAlloc( 100 );
pProgress = Extra_ProgressBarStart( stdout, Extra_FileReaderGetFileSize(p) );
for ( iLine = 0; vTokens = Extra_FileReaderGetTokens(p); iLine++ )
{
Extra_ProgressBarUpdate( pProgress, Extra_FileReaderGetCurPosition(p), NULL );
if ( vTokens->nSize == 1 )
{
printf( "%s: Wrong input file format.\n", Extra_FileReaderGetFileName(p) );
Vec_StrFree( vString );
Abc_NtkDelete( pNtk );
return NULL;
}
// get the type of the line
if ( strncmp( vTokens->pArray[0], "INPUT", 5 ) == 0 )
Io_ReadCreatePi( pNtk, vTokens->pArray[1] );
else if ( strncmp( vTokens->pArray[0], "OUTPUT", 5 ) == 0 )
Io_ReadCreatePo( pNtk, vTokens->pArray[1] );
else
{
// get the node name and the node type
pType = vTokens->pArray[1];
if ( strncmp(pType, "DFF", 3) == 0 ) // works for both DFF and DFFRSE
{
pNode = Io_ReadCreateLatch( pNtk, vTokens->pArray[2], vTokens->pArray[0] );
// Abc_LatchSetInit0( pNode );
if ( pType[3] == '0' )
Abc_LatchSetInit0( pNode );
else if ( pType[3] == '1' )
Abc_LatchSetInit1( pNode );
else
Abc_LatchSetInitDc( pNode );
}
else if ( strcmp(pType, "LUT") == 0 )
{
fLutsPresent = 1;
ppNames = (char **)vTokens->pArray + 3;
nNames = vTokens->nSize - 3;
// check the number of inputs
if ( nNames > 8 )
{
printf( "%s: Currently cannot read truth tables with more than 8 inputs (%d).\n", Extra_FileReaderGetFileName(p), nNames );
Vec_StrFree( vString );
Abc_NtkDelete( pNtk );
return NULL;
}
// get the hex string
pString = vTokens->pArray[2];
if ( strncmp( pString, "0x", 2 ) )
{
printf( "%s: The LUT signature (%s) does not look like a hexadecimal beginning with \"0x\".\n", Extra_FileReaderGetFileName(p), pString );
Vec_StrFree( vString );
Abc_NtkDelete( pNtk );
return NULL;
}
pString += 2;
// pad the string with zero's if needed
nDigits = (1 << nNames) / 4;
if ( nDigits == 0 )
nDigits = 1;
if ( strlen(pString) < (unsigned)nDigits )
{
Vec_StrFill( vString, nDigits - strlen(pString), '0' );
Vec_StrPrintStr( vString, pString );
Vec_StrPush( vString, 0 );
pString = Vec_StrArray( vString );
}
// read the hex number from the string
if ( !Extra_ReadHexadecimal( uTruth, pString, nNames ) )
{
printf( "%s: Reading hexadecimal number (%s) has failed.\n", Extra_FileReaderGetFileName(p), pString );
Vec_StrFree( vString );
Abc_NtkDelete( pNtk );
return NULL;
}
// check if the node is a constant node
if ( Extra_TruthIsConst0(uTruth, nNames) )
{
pNode = Io_ReadCreateNode( pNtk, vTokens->pArray[0], ppNames, 0 );
Abc_ObjSetData( pNode, Abc_SopRegister( pNtk->pManFunc, " 0\n" ) );
}
else if ( Extra_TruthIsConst1(uTruth, nNames) )
{
pNode = Io_ReadCreateNode( pNtk, vTokens->pArray[0], ppNames, 0 );
Abc_ObjSetData( pNode, Abc_SopRegister( pNtk->pManFunc, " 1\n" ) );
}
else
{
// create the node
pNode = Io_ReadCreateNode( pNtk, vTokens->pArray[0], ppNames, nNames );
assert( nNames > 0 );
if ( nNames > 1 )
Abc_ObjSetData( pNode, Abc_SopCreateFromTruth(pNtk->pManFunc, nNames, uTruth) );
else if ( pString[0] == '2' )
Abc_ObjSetData( pNode, Abc_SopCreateBuf(pNtk->pManFunc) );
else if ( pString[0] == '1' )
Abc_ObjSetData( pNode, Abc_SopCreateInv(pNtk->pManFunc) );
else
{
printf( "%s: Reading truth table (%s) of single-input node has failed.\n", Extra_FileReaderGetFileName(p), pString );
Vec_StrFree( vString );
Abc_NtkDelete( pNtk );
return NULL;
}
}
}
else
{
// create a new node and add it to the network
ppNames = (char **)vTokens->pArray + 2;
nNames = vTokens->nSize - 2;
pNode = Io_ReadCreateNode( pNtk, vTokens->pArray[0], ppNames, nNames );
// assign the cover
if ( strcmp(pType, "AND") == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateAnd(pNtk->pManFunc, nNames, NULL) );
else if ( strcmp(pType, "OR") == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateOr(pNtk->pManFunc, nNames, NULL) );
else if ( strcmp(pType, "NAND") == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateNand(pNtk->pManFunc, nNames) );
else if ( strcmp(pType, "NOR") == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateNor(pNtk->pManFunc, nNames) );
else if ( strcmp(pType, "XOR") == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateXor(pNtk->pManFunc, nNames) );
else if ( strcmp(pType, "NXOR") == 0 || strcmp(pType, "XNOR") == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateNxor(pNtk->pManFunc, nNames) );
else if ( strncmp(pType, "BUF", 3) == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateBuf(pNtk->pManFunc) );
else if ( strcmp(pType, "NOT") == 0 )
Abc_ObjSetData( pNode, Abc_SopCreateInv(pNtk->pManFunc) );
else if ( strncmp(pType, "MUX", 3) == 0 )
Abc_ObjSetData( pNode, Abc_SopRegister(pNtk->pManFunc, "1-0 1\n-11 1\n") );
else if ( strncmp(pType, "gnd", 3) == 0 )
Abc_ObjSetData( pNode, Abc_SopRegister( pNtk->pManFunc, " 0\n" ) );
else if ( strncmp(pType, "vdd", 3) == 0 )
Abc_ObjSetData( pNode, Abc_SopRegister( pNtk->pManFunc, " 1\n" ) );
else
{
printf( "Io_ReadBenchNetwork(): Cannot determine gate type \"%s\" in line %d.\n", pType, Extra_FileReaderGetLineNumber(p, 0) );
Vec_StrFree( vString );
Abc_NtkDelete( pNtk );
return NULL;
}
}
}
}
Extra_ProgressBarStop( pProgress );
Vec_StrFree( vString );
// check if constant have been added
// if ( pNet = Abc_NtkFindNet( pNtk, "vdd" ) )
// Io_ReadCreateConst( pNtk, "vdd", 1 );
// if ( pNet = Abc_NtkFindNet( pNtk, "gnd" ) )
// Io_ReadCreateConst( pNtk, "gnd", 0 );
Abc_NtkFinalizeRead( pNtk );
// if LUTs are present, collapse the truth tables into cubes
if ( fLutsPresent )
{
if ( !Abc_NtkToBdd(pNtk) )
{
printf( "Io_ReadBenchNetwork(): Converting to BDD has failed.\n" );
Abc_NtkDelete( pNtk );
return NULL;
}
if ( !Abc_NtkToSop(pNtk, 0) )
{
printf( "Io_ReadBenchNetwork(): Converting to SOP has failed.\n" );
Abc_NtkDelete( pNtk );
return NULL;
}
}
return pNtk;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
|
